[systemd-devel] Bug in source_io_register?

[David Strauss]

source_io_register errors out with EEXIST, but that's supposed to be
harmless for epoll [1]:

Q1: What happens if you add the same fd to an epoll_set twice?
A1: You will probably get EEXIST. However, it is possible that two
threads may add the same fd twice. This is a harmless condition.

I assume we should ignore it in the event library?

[1] http://linux.die.net/man/4/epoll

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David Strauss
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